Lunch box

Lunch box sets up first open -ended stereoplasm shell and is located the inside flexible inner bag of stereoplasm shell including the upper end, flexible inner bag abut in the internal surface of stereoplasm shell, and the inside one top that forms of the flexibility inner bag has the second open -ended and holds the chamber, and the top of flexible inner bag has the turn -ups portion of outwards buckling and forming, and the lower surface of the turn -ups portion is provided with opening lock joint groove down, and the top of stereoplasm shell is provided with the collar flange who sets in the lock joint inslot. The utility model provides an avoid abluent lunch -box, set in the lock joint groove at flexible inner bag edge at the top of stereoplasm shell, makes flexible inner bag dismantled on can following the stereoplasm shell, utilizes new flexible inner bag replacement to be made used flexible inner bag can realize the lunch -box and exempt from to wash, and simultaneously, the lunch -box has better sealed effect, heat preservation effect, prevents boiling hot effect, the utility model discloses simple structure has wide application promotion prospect.